Apple has already released another update to fix an issue introduced by its …

It's only been a couple of days since Apple released iMac Software Update 1.2 for Tiger users, but something must have been very wrong in order for Apple to pull the update and replace it with 1.2.1 so soon. The update applies to the same iMacs—20" and 24" aluminum iMacs with 2.0, 2.4, or 2.8GHz procesors running Tiger.

Not only does the update claim to improve performance and reliability of graphic-intensive games, it (more importantly) "fixes an issue that some customers encountered when installing Mac OS X Leopard after applying iMac Software Update 1.2." Apple predictably does not elaborate on what that issue may have been.

After the 1.2 update came out, we reported that some readers had told us that it had fixed the obnoxious iMac freezing problem. Since then, we've heard more conflicting reports on whether the update remedied the issue, and the same now applies to 1.2.1. Be sure to let us know if you experience any noticeable changes either way. In the meantime, we will continue to stick pins into our Apple-shaped voodoo dolls in order to coax it into being more forthcoming to customers over updates.

Update: It appears as if this Apple support document might describe the offending issue. Some iMac users have found themselves stuck in a loop when trying to log into Leopard. Oops.